package com.bjqh.edu.UI.Utils;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.bjqh.edu.Base.AppConstants;
import com.bjqh.edu.R;
import com.lzy.okgo.OkGo;
import com.lzy.okgo.callback.FileCallback;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import okhttp3.Call;
import okhttp3.Response;

/**
 * Created by Administrator on 2017/10/16.
 */

public class UpdateManager {
    private Context mContext; //上下文

    private String apkUrl =
            "**********************"; //apk下载地址
    private  String savePath; //apk保存到SD卡的路径
    private  String saveFileName; //完整路径名
    private ProgressBar mProgress; //下载进度条控件
    private TextView tvProgress; //下载进度条控件
    private static final int DOWNLOADING = 1; //表示正在下载
    private static final int DOWNLOADED = 2; //下载完毕
    private static final int DOWNLOAD_FAILED = 3; //下载失败
    private int progress; //下载进度
    private boolean cancelFlag = false; //取消下载标志位

    private String serverVersion; //从服务器获取的版本号
    private String clientVersion; //客户端当前的版本号
    private String updateDescription = "发现新版本，是否更新"; //更新内容描述信息
    private boolean forceUpdate; //是否强制更新
private  String id;
    private AlertDialog alertDialog1, alertDialog2; //表示提示对话框、进度条对话框

    /** 构造函数 */
    public UpdateManager(Context context,String serverVersion,String clientVersion,boolean forceUpdate,String apkUrl,String id) {
        this.mContext = context;
        this.serverVersion=serverVersion;
        this.clientVersion=clientVersion;
        this.forceUpdate=forceUpdate;
        this.apkUrl=apkUrl;
        this.id=id;
    }

    /** 显示更新对话框 */
    public void showNoticeDialog() {
        //如果版本最新，则不需要更新
     /*   if (serverVersion.equals(clientVersion))
            return;*/
        AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
        dialog.setTitle("发现新版本 ：" + serverVersion);
        dialog.setMessage(updateDescription);
        dialog.setPositiveButton("现在更新", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface arg0, int arg1) {
                // TODO Auto-generated method stub
                arg0.dismiss();
                showDownloadDialog();
            }
        });
        if (forceUpdate == true) {
            dialog.setNegativeButton("下次更新", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    System.exit(0);

                }
            });
        }
        //是否强制更新
        if (forceUpdate == false) {
            dialog.setNegativeButton("待会更新", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface arg0, int arg1) {
                    // TODO Auto-generated method stub
                    arg0.dismiss();
                }
            });
        }
        alertDialog1  = dialog.create();
        alertDialog1.setCancelable(false);
        alertDialog1.show();
    }

    /** 显示进度条对话框 */
    public void showDownloadDialog() {
        AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
        dialog.setTitle("正在更新");
        final LayoutInflater inflater = LayoutInflater.from(mContext);
        View v = inflater.inflate(R.layout.softupdate_progress, null);
        mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
        tvProgress = (TextView) v.findViewById(R.id.tv_progress);
        dialog.setView(v);
        //如果是强制更新，则不显示取消按钮
        if (forceUpdate == false) {
            dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface arg0, int arg1) {
                    // TODO Auto-generated method stub
                    arg0.dismiss();
                    cancelFlag = false;
                }
            });
        }
        alertDialog2  = dialog.create();
        alertDialog2.setCancelable(false);
        alertDialog2.show();

        //下载apk
        downloadAPK();
    }

    /** 下载apk的线程 */
    public void downloadAPK() {
   new Thread(new Runnable() {
            @Override
            public void run() {
                // TODO Auto-generated method stub
                try {
                    URL url = new URL(apkUrl+id+"");
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    conn.connect();

                    int length = conn.getContentLength();
                    InputStream is = conn.getInputStream();

                    savePath = getSDPath()+"/updateAPK/";

                    File file = new File(savePath);
                    if(!file.exists()){
                        file.mkdir();
                    }

                    saveFileName = savePath +serverVersion+ "apkName.apk";

                    String apkFile = saveFileName;
                    File ApkFile = new File(apkFile);
                    FileOutputStream fos = new FileOutputStream(ApkFile);

                    int count = 0;
                    byte buf[] = new byte[1024];

                    do{
                        int numread = is.read(buf);
                        count += numread;
                        progress = (int)(((float)count / length) * 100);
                        //更新进度
                        mHandler.sendEmptyMessage(DOWNLOADING);
                        if(numread <= 0){
                            //下载完成通知安装
                            mHandler.sendEmptyMessage(DOWNLOADED);
                            break;
                        }
                        fos.write(buf, 0, numread);
                    }while(!cancelFlag); //点击取消就停止下载.

                    fos.close();
                    is.close();
                } catch(Exception e) {
                    mHandler.sendEmptyMessage(DOWNLOAD_FAILED);
                    e.printStackTrace();
                    Log.e("eeeeeeeeeee",e.getMessage());
                }
            }
        }).start();
      /*  savePath = getSDPath()+"/updateAPK/";

        File file = new File(savePath);
        if(!file.exists()){
            file.mkdir();
        }

        saveFileName = savePath +serverVersion+ "apkName.apk";

        String apkFile = saveFileName;
        OkGo.get(AppConstants.BASE_URL+"sys/appDownload.shtml")//
                .tag(this)//
                .params("id",id)
                .execute(new FileCallback(apkFile) {  //文件下载时，需要指定下载的文件目录和文件名
                    @Override
                    public void onSuccess(File file, Call call, Response response) {
                        // file 即为文件数据，文件保存在指定目录
                        if (!file.exists()) {
                            file.mkdir();
                        }
                        Intent intent = new Intent(Intent.ACTION_VIEW);
                        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        intent.setDataAndType(Uri.parse("file://" + file.toString()), "application/vnd.android.package-archive");
                        mContext.startActivity(intent);
                    }

                    @Override
                    public void downloadProgress(long currentSize, long totalSize, float progress, long networkSpeed) {
                        //这里回调下载进度(该回调在主线程,可以直接更新ui)
                        tvProgress.setText(progress+"%");
                    }
                });
*/

    }

    /**
     * 获取SD path
     *
     * @return
     */
    public String getSDPath() {
        File sdDir = null;
        boolean sdCardExist = Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED); // 判断sd卡是否存在
        if (sdCardExist) {
            sdDir = Environment.getExternalStorageDirectory();// 获取跟目录
            // Toast.makeText(this,sdDir.toString(),Toast.LENGTH_LONG).show();
            return sdDir.toString();
        } else {
            Toast.makeText(mContext, "没有SD卡", Toast.LENGTH_LONG).show();
        }

        return null;
    }

    /** 更新UI的handler */
    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            // TODO Auto-generated method stub
            switch (msg.what) {
                case DOWNLOADING:
                    mProgress.setProgress(progress);
                    tvProgress.setText(progress+"%");
                    break;
                case DOWNLOADED:
                    if (alertDialog2 != null)
                        alertDialog2.dismiss();
                    installAPK();
                    break;
                case DOWNLOAD_FAILED:
                    Toast.makeText(mContext, "网络断开，请稍候再试", Toast.LENGTH_LONG).show();
                    break;
                default:
                    break;
            }
        }
    };

    /** 下载完成后自动安装apk */
    public void installAPK() {
        File apkFile = new File(saveFileName);
        if (!apkFile.exists()) {
            return;
        }
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setDataAndType(Uri.parse("file://" + apkFile.toString()), "application/vnd.android.package-archive");
        mContext.startActivity(intent);
 /*       MyActivityManager.finishAll();
        MyApplication.exit();*/
    }
}
